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Space Race
Defend Earth from alien invaders
absolute value
The distance of a number from zero on a number line.

slope
The way of describing the steepness of a line, ramp or hill. The ratio of rise to run.

area
The number of square units needed to cover a surface.

perimeter
The distance around a polygon

variable
A letter or symbol that stands for one or more numbers.

factor
A number that is multiplied by another number to find a product.

integer
The set of whole numbers and their opposites.

inequality
A mathematical expression which shows that two quantities are not equal.

percent
A ratio comparing a number to 100.

reciprocal
One of two numbers whose product is 1. Also known as the multiplicative inverse of a number.

multiple
The product of any number and a whole number. The value obtained by repeated addition.

Order of Operations
The rules for performing operations in expressions with more than one operation.

like terms
Two or more terms that have the same variable raised to the same power.

linear
A constant change in x that corresponds to a constant change in y, forming a straight line.

expression
A mathematical phrase that combines operations, numbers, and/or variables.

equation
A statement that two expressions have the same value.

formula
An equation that states a rule or a fact.

distributive property
The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. a(b+c)= ab+ac

rational numbers
Any number that can be written as a ratio, a/b where a and b are integers and b doesn't = 0.

volume
The number of cubic units needed to fill a space.

simplify
To rewrite an expression as simply as possible.

origin
The point where the x-axis and the y-axis intersect on the coordinate plane.

intercept
The point of a line or curve where it crosses the x-axis or y-axis.

constant
A value that does not change.

irrational number
Any number that cannot be written as a ratio, repeating, or terminating decimal.

coefficient
The number that is multiplied by the variable in an algebraic expression or equation.

terms
The parts of an expression that are separated by an addition or subtraction sign.

ratio
a comparison of two numbers by division.

evaluate
To find the value of a numerical or algebraic expression.

ordered pair
A pair of numbers used to locate a point on a coordinate plane.

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